1/*
2 * Copyright (C) 2011 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef JSBoundFunction_h
27#define JSBoundFunction_h
28
29#include "JSFunction.h"
30
31namespace JSC {
32
33EncodedJSValue JSC_HOST_CALL boundFunctionCall(ExecState*);
34EncodedJSValue JSC_HOST_CALL boundFunctionConstruct(ExecState*);
35
36class JSBoundFunction : public JSFunction {
37public:
38    typedef JSFunction Base;
39
40    static JSBoundFunction* create(ExecState*, JSGlobalObject*, JSObject* targetFunction, JSValue boundThis, JSValue boundArgs, int, const String&);
41
42    static void destroy(JSCell*);
43
44    static bool customHasInstance(JSObject*, ExecState*, JSValue);
45
46    JSObject* targetFunction() { return m_targetFunction.get(); }
47    JSValue boundThis() { return m_boundThis.get(); }
48    JSValue boundArgs() { return m_boundArgs.get(); }
49
50    static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
51    {
52        ASSERT(globalObject);
53        return Structure::create(vm, globalObject, prototype, TypeInfo(JSFunctionType, StructureFlags), &s_info);
54    }
55
56    static const ClassInfo s_info;
57
58protected:
59    const static unsigned StructureFlags = OverridesHasInstance | OverridesVisitChildren | Base::StructureFlags;
60
61    static void visitChildren(JSCell*, SlotVisitor&);
62
63private:
64    JSBoundFunction(ExecState*, JSGlobalObject*, Structure*, JSObject* targetFunction, JSValue boundThis, JSValue boundArgs);
65
66    void finishCreation(ExecState*, NativeExecutable*, int, const String&);
67
68    WriteBarrier<JSObject> m_targetFunction;
69    WriteBarrier<Unknown> m_boundThis;
70    WriteBarrier<Unknown> m_boundArgs;
71};
72
73} // namespace JSC
74
75#endif // JSFunction_h
76